I take her food/snacks just in case. But usually I order my meal with her in mind. I get a side of veggies or a salad for her to munch on with me. I'm more picky about what she eats than H. I try to keep it healthy for her. He likes to let her try anything. He gave her maybe 3 bites of potato chip at home. I literally wanted to head desk. We do let her eat some sweets with us.
It all really depends but I generally have food on hand and either order something she can eat or let her nibble off anything that isn't too spicy or loaded with salt/sugar.
I generally order something I can share with him. I usually bring puffs, Cheerios, or grapes or something for him to snack on before we're served as well.